If China can produce big submarines with pump-jet propulsion, it will have entered the same era of undersea warfare as the U.S. It is the undersea equivalent of stepping on a sheet of bubble wrap while attempting to sneak past guards. Propeller technology has evolved tremendously over the last few generations of subs, but hydrojets are even more silent, efficient, durable, more functional in shallow water, and best of all, less prone to cavitation.Ĭavitation, whereby water boils into bubbles under high pressure at low temperatures, is among the greatest threats facing stealthy submariners. Hydrojet or “pump-jet” technology is the next step beyond noisy propellers, which tend to be the greatest source of noise from underwater vehicles. First, satellite photos showed China putting together the hull for a new sub that would be dramatically larger than any previous PLAN undersea vessel, and then China field-tested a nuclear sub using the same quiet hydrojet propulsion system American subs employ. Two particularly troubling events took place in 2023. The People’s Liberation Army Navy (PLAN) has greatly narrowed the submarine warfare gap, which could spell big trouble for U.S. Navy is losing its competitive edge in submarine warfare to China, which went from creaky, noisy, slow-moving subs to ultra-quiet nuclear-powered attack vehicles in less than 20 years. The Wall Street Journal (WSJ) on Monday published a gloomy report warning that the U.S. When "Hunt for Red October" came out, it was quite a disappointment that someone talked so much to Tom Clancy Can't begin to express how disturbing this report is
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